Systematic ranging and late warning asteroid impacts
نویسندگان
چکیده
منابع مشابه
Decision Model for Potential Asteroid Impacts
Research in asteroid detection and orbital characterization has identified a new class of possible natural disaster. Asteroids are the only known type of natural disaster that could potentially destroy civilization. The societal importance of asteroid detection is assumed to be high, given the destructive capacity of Potentially Hazardous Asteroids (PHAs). This paper offers a decision analysis ...
متن کاملThe hazard of near-Earth asteroid impacts on earth
Near-Earth asteroids (NEAs) have struck the Earth throughout its existence. During epochs when life was gaining a foothold f 4 Ga, the impact rate was thousands of times what it is today. Even during the Phanerozoic, the numbers of NEAs guarantee that there were other impacts, possibly larger than the Chicxulub event, which was responsible for the Cretaceous–Tertiary extinctions. Astronomers ha...
متن کاملThe Seismic Effect of Impacts on Asteroid Surface Morphology: Three-
Introduction: In recent years, spacecraft observations of 'medium-sized' asteroids 951 Gaspra, 243 Ida, 253 Mathilde, and most importantly 433 Eros have shown the overriding dominance of impact processes with regard to the structure and appearance of these irregular bodies. In a previous work [1], I investigated the relatively unexplored area of seismic shaking as a cause for the downslope moti...
متن کاملThe Seismic Effect of Impacts on Asteroid Surface Morphology: Early
Introduction: In recent years, spacecraft observations of asteroids 951 Gaspra, 243 Ida, 253 Mathilde, and 433 Eros have shown the overriding dominance of impact processes with regard to the structure and appearance of these small, irregular bodies. One currently unanswered question is: to what degree does seismic shaking from impacts affect the surface morphology of these bodies [1]? Through d...
متن کاملDirect detection of the Yarkovsky effect by radar ranging to asteroid 6489 Golevka.
Radar ranging from Arecibo, Puerto Rico, to the 0.5-kilometer near-Earth asteroid 6489 Golevka unambiguously reveals a small nongravitational acceleration caused by the anisotropic thermal emission of absorbed sunlight. The magnitude of this perturbation, known as the Yarkovsky effect, is a function of the asteroid's mass and surface thermal characteristics. Direct detection of the Yarkovsky ef...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Icarus
سال: 2015
ISSN: 0019-1035
DOI: 10.1016/j.icarus.2015.05.032